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STUDIES ON PRE AND POST- HARVEST TREATMENTS ON RIPENING IN SAPOTA (Manilkara achras (Mill.)Fosberg) cv. KALIPATTI.
KrishiKosh
View Archive Info| Field | Value | |
| Title |
STUDIES ON PRE AND POST- HARVEST TREATMENTS ON RIPENING IN SAPOTA (Manilkara achras (Mill.)Fosberg) cv. KALIPATTI.
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| Creator |
M.Harika
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| Contributor |
Dr. A.S.Padmavathamma
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| Subject |
pre-harvest ,ripening,TSS,dip treatments
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| Description |
The present investigation entitled “Studies on pre and post-harvest treatments on ripening in sapota cv. Kalipatti” was carried out in the Post Harvest Technology Laboratory, College of Horticulture, Rajendranagar during the year 2011-2012. A set of three experiments namely pre-harvest spray of potassium sulphate, post-harvest ethrel treatment and combination of best of pre-harvest potassium sulphate spray+ post-harvest ethrel treatments on ripening in sapota cv.Kallipatti at ambient temperature were conducted. The experiments were laid out in completely randomized design with factorial concept. Various physical parameters like PLW (%), ripening (%), spoilage (%), firmness (Kg cm-2) and biochemical parameters like TSS (0Brix), acidity (%), brix-acid ratio, sugars(%) and ascorbic acid (mg/100 g) were estimated at 2 days interval during ripening. All the treatments accelerated the ripening when compared to control. The data on quality parameters like PLW, total sugars, titrable acidity, TSS also confirm the enhanced effect on ripening with above treatments. In the present study of pre-harvest spray of fruits with potassium sulphate at 10 and 15 per cent 30 days before harvest (T5&T8) were effective in enhancing the ripening process. The data on ripening, total sugars, titrable acidity, TSS, firmness, ascorbic acid, organoleptic score were maximum in potassium sulphate treated fruits compared to control. Among the respective treatments the highest total, reducing, non-reducing (%) and TSS (0B) recorded in fruits sprayed with 10% and 15% K2SO4 30 days before harvest (T5&T8). Post harvest dip treatments of sapota fruits with ethrel 1000ppm and 1750 ppm showed lowest acidity and ethrel 2000 ppm showed lowest ascorbic acid content. Ethrel 1000 ppm effectively enhanced the ripening and fruit quality. The spoilage was maximum in ethrel 2000 ppm concentration. Ethrel 1000 ppm and 1750 ppm recorded high in organoleptic score. The first two best treatments from the above two experiments were tried in combination as fruits sprayed with10% K2SO4 30 days before harvest+ post-harvest ethrel 1000 ppm, fruits sprayed with10% K2SO4 30 days before harvest+ post-harvest ethrel 1750 ppm, fruits sprayed with15% K2SO4 30 days before harvest+ post-harvest ethrel 1000 ppm, fruits sprayed with15% K2SO4 30 days before harvest+ post-harvest ethrel 1750 ppm. The percentage of ripe fruits were enhanced in pre-harvest sprayed fruits with potassium sulphate+ post-harvest treatment with ethrel with highest percentage of ripened fruits recorded in fruits sprayed with 15% K2SO4 30 days before harvest + post-harvest treatment of 1750 ppm ethrel. |
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| Date |
2016-07-23T10:43:11Z
2016-07-23T10:43:11Z 2012-08 |
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| Type |
Thesis
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| Identifier |
http://krishikosh.egranth.ac.in/handle/1/69490
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| Language |
en
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| Format |
application/pdf
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| Publisher |
DR.Y.S.R. HORTICULTURAL UNIVERSITY
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